OP-27
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1.3
6 3
0.94
5 2.5
0.7
4 2
MΩ GΩ V dB 20 µV/V V/mV V/mV V V V/µs
± 11.0 ± 12.3 114 126 1 1000 800 1800 1500 10
± 11.0 ± 12.3 106 123 1 1000 800 1800 1500 10
± 11.0 ± 12.3 100 120 2 700 600 1500 1500
COMMON-MODE REJECTION RATIO CMRR POWER SUPPLY PSRR REJECTION RATIO LARGE-SIGNAL VOLTAGE GAIN AVO
OUTPUT VOLTAGE SWING SLEW RATE7 GAIN BANDWIDTH PRODUCT7 OPEN-LOOP OUTPUT RESISTANCE POWER CONSUMPTION OFFSET ADJUSTMENT RANGE
(@ VS = ± 15 V, –55؇C ≤ TA ≤ 125؇C, unless otherwise noted.)
Min OP27A Typ 30 Max 60 Min OP27C Typ 70 Max 300 Unit µV
(Continued on page 7)
4V– (CASE) NC = NO CONNix) Epoxy Mini-DIP (P-Suffix) 8-Pin SO (S-Suffix)
VOS TRIM 1 –IN 2 +IN 3 V– 4
8 7 6 5
0.1 Hz to 10 Hz fO = 10 Hz fO = 30 Hz fO = 1000 Hz fO = 10 Hz fO = 30 Hz fO = 1000 Hz
0.08 3.5 3.1 3.0 1.7 1.0 0.4
in
0.6
RIN RINCM IVR VCM = ± 11 V VS = ± 4 V to ± 18 V RL ≥ 2 kΩ, VO = ± 10 V RL ≥ 600 Ω, VO = ± 10 V RL ≥ 2 kΩ RL ≥ 600 Ω RL ≥ 2 kΩ
OP27
VOS TRIM V+ OUT NC
NC = NO CONNECT
V+ R3 Q6 R1* 1 8 R4 R2* C2 Q22 Q21 R23 Q23 R24 Q24 R9 Q20 Q1A NONINVERTING INPUT (+) Q3 INVERTING INPUT (–) *R1 AND R2 ARE PERMANENTLY ADJUSTED AT WAFER TEST FOR MINIMUM OFFSET VOLTAGE. V– Q11 Q12 Q27 Q28 Q26 Q45 Q1B Q2B Q2A R5 C3 R12 C4 Q19 OUTPUT C1 Q46
Min
OP27C/G Typ Max 30 0.4 12 ± 15 0.09 3.8 3.3 3.2 1.7 1.0 0.4 100 2.0 75 ± 80 0.25 8.0 5.6 4.5
Unit µV µV/MO nA nA µV p-p nV/√Hz nV/√Hz nV/√Hz pA/√Hz pA/√Hz pA/√Hz
OP27–SPECIFICATIONS
ELECTRICAL CHARACTERISTICS (@ V = ± 15 V, T = 25؇C, unless otherwise noted.)
S A
Parameter INPUT OFFSET VOLTAGE1 LONG-TERM VOS STABILITY2, 3 INPUT OFFSET CURRENT INPUT BIAS CURRENT INPUT NOISE VOLTAGE3, 4 INPUT NOISE Voltage Density3 INPUT NOISE Current Density3, 5 INPUT RESISTANCE Differential-Mode6 Common-Mode INPUT VOLTAGE RANGE
VOS ADJ.
Figure 1. Simplified Schematic
REV. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 Fax: 781/326-8703 © Analog Devices, Inc., 2002
Low-Noise, Precision Operational Amplifier OP27
PIN CONNECTIONS TO-99 (J-Suffix)
BAL BAL 1 –IN 2 +IN 3 V+ OUT NC
OP27
The OP27 precision operational amplifier combines the low offset and drift of the OP07 with both high speed and low noise. Offsets down to 25 µV and drift of 0.6 µV/° C maximum make the OP27 ideal for precision instrumentation applications. Exceptionally low noise, en = 3.5 nV/√Hz, at 10 Hz, a low 1/f noise corner frequency of 2.7 Hz, and high gain (1.8 million), allow accurate high-gain amplification of low-level signals. A gain-bandwidth product of 8 MHz and a 2.8 V/µsec slew rate provides excellent dynamic accuracy in high-speed, dataacquisition systems. A low input bias current of ± 10 nA is achieved by use of a bias-current-cancellation circuit. Over the military temperature range, this circuit typically holds IB and IOS to ± 20 nA and 15 nA, respectively. The output stage has good load driving capability. A guaranteed swing of ± 10 V into 600 Ω and low output distortion make the OP27 an excellent choice for professional audio applications.
Symbol VOS VOS/Time IOS IB en p-p en
Conditions
Min
OP27A/E Typ Max 10 0.2 7 ± 10 25 1.0 35 ± 40 0.18 5.5 4.5 3.8 4.0 2.3 0.6
Min
OP27F Typ Max 20 0.3 9 ± 12 0.08 3.5 3.1 3.0 1.7 1.0 0.4 60 1.5 50 ± 55 0.18 5.5 4.5 3.8 4.0 2.3 0.6
a
FEATURES Low Noise: 80 nV p-p (0.1 Hz to 10 Hz), 3 nV/√Hz Low Drift: 0.2 V/؇ C High Speed: 2.8 V/ s Slew Rate, 8 MHz Gain Bandwidth Low VOS: 10 V Excellent CMRR: 126 dB at V CM of ± 11 V High Open-Loop Gain: 1.8 Million Fits 725, OP07, 5534A Sockets Available in Die Form GENERAL DESCRIPTION
–2–
REV. A
OP27 ELECTRICAL CHARACTERISTICS
Parameter INPUT OFFSET VOLTAGE1 AVERAGE INPUT OFFSET DRIFT INPUT OFFSET CURRENT INPUT BIAS CURRENT INPUT VOLTAGE RANGE Symbol VOS TCVOS2 TCVOSn3 IOS IB IVR VCM = ± 10 V VS = ± 4.5 V to ± 18 V RL ≥ 2 kΩ, VO = ± 10 V 600 RL ≥ 2 kΩ ± 11.5 ± 10.3 108
VO SR
± 12.0 ± 13.8 ± 10.0 ± 11.5 1.7 2.8
